THE MICROSCOPE. V5) 
AN oxalic-producing ferment has been discovered by W. Zopf. 
He calls it saccharomyces hansenii. 
Pror. L. H. Pamuet, who has been investigating the root-rot 
of cotton, a cotton blight, concludes that the disease is due to a 
fungus mycelium. 
Tue Croonian Lecture for 1887, which was to have been deliy- 
ered by M. Pasteur, was read by M. Roux, on account of the 
former’s illness. The subject was ‘‘ Preventive Inoculation.” 
Tue Astley-Cooper prize, amounting to $1,500, will be awarded 
in 1892, The question proposed is, ‘‘ The Influence of Micro-organ- 
isms upon inflammation.” The papers must be written in English, 
or accompanied by an English translation, and should be addressed 
before January 1, 1892, to Guy’s Hospital, London. The prize will 
not be awarded to two or three working conjointly. 
Tue American GeEo.oaist, now in its third year of publication, 
is a worthy representative of that department of natural science 
on this continent. Besides the strictly technical articles, it con- 
tains much of interest and value to the general reader. Among its 
editors and contributors are the ablest geologists in this country. 
It is published in Minneapolis, Minn. 
Apropos of the interesting communication of Dr. F. O. Jacobs in 
the June number of The Microscope, the attention of dental micro- 
scopists and others who are interested in the subject is called to an 
illustrated article by Dr. R. R. Andrews, of Cambridge, Mass., in 
the April number of The Dental Review. 
Bronpt has isolated from the saliva five varieties of micro-organ- 
isms which have distinct morphological and biological characteristies, 
and differ in the symptoms they produce in inoculated animals. 
THe ptomaine produced by the bacillus of mice septiczemia is 
called methylguanidine. One-thirty-second of a grain is sufficient 
to kill a rabbit. 
BOOK REVIEWS. 
PROCEEDINGS AND ADDRESSES AT THE SANITARY CONVENTION HELD AT 
HAsTINGS, Micu., DEc. 3 AND 4, 1888. 
PROPER ForRMS OF ADDRESS. Reprinted from Alden’s Manifold Cyclopedia. J. 
B. Alden, publisher, New York. 
NINETEENTH ANNUAL REPORT OF THE ENTOMOLOGICAL SOCIETY OF ONTARIO, 
1888. Toronto; Warwick & Sons. 
This report contains a number of valuable contributions on in- 
sects, and several sketches of noted entomologists. 
